Class Streams


  • public class Streams
    extends java.lang.Object
    Utility methods for streams.
    • Constructor Summary

      Constructors 
      Constructor Description
      Streams()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <T> java.util.List<T> filter​(java.lang.Iterable<T> list, java.util.function.Predicate<? super T> predicate)  
      static <R> java.util.List<R> map​(int[] source, java.util.function.IntFunction<? extends R> transform)  
      static <T,​R>
      java.util.List<R>
      map​(java.lang.Iterable<T> iterable, java.util.function.Function<? super T,​? extends R> transform)  
      static <T,​R>
      java.util.List<R>
      map​(java.util.Collection<T> collection, java.util.function.Function<? super T,​? extends R> transform)  
      static <T,​R>
      java.util.List<R>
      map​(java.util.stream.Stream<T> stream, java.util.function.Function<? super T,​? extends R> transform)  
      static <T> java.util.stream.Stream<T> of​(java.lang.Iterable<T> iterable)  
      static java.util.stream.IntStream reverseRange​(int endExclusive, int start)  
      static java.math.BigDecimal sum​(java.util.stream.Stream<java.math.BigDecimal> stream)  
      static <T> java.util.List<T> toList​(java.lang.Iterable<T> iterable)  
      static <T,​R>
      java.util.Set<R>
      unique​(java.util.Collection<T> collection, java.util.function.Function<? super T,​? extends R> transform)  
      static <T,​R>
      java.util.Set<R>
      unique​(java.util.stream.Stream<T> stream, java.util.function.Function<? super T,​? extends R> transform)  
      static <K,​V>
      java.util.Map<K,​V>
      uniqueIndex​(java.util.Collection<V> collection, java.util.function.Function<? super V,​? extends K> keyFunction)  
      static <K,​V>
      java.util.Map<K,​V>
      uniqueIndex​(java.util.stream.Stream<V> stream, java.util.function.Function<? super V,​? extends K> keyFunction)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • Streams

        public Streams()
    • Method Detail

      • of

        public static <T> java.util.stream.Stream<T> of​(java.lang.Iterable<T> iterable)
      • toList

        public static <T> java.util.List<T> toList​(java.lang.Iterable<T> iterable)
      • map

        public static <T,​R> java.util.List<R> map​(java.lang.Iterable<T> iterable,
                                                        java.util.function.Function<? super T,​? extends R> transform)
      • map

        public static <T,​R> java.util.List<R> map​(java.util.Collection<T> collection,
                                                        java.util.function.Function<? super T,​? extends R> transform)
      • map

        public static <T,​R> java.util.List<R> map​(java.util.stream.Stream<T> stream,
                                                        java.util.function.Function<? super T,​? extends R> transform)
      • map

        public static <R> java.util.List<R> map​(int[] source,
                                                java.util.function.IntFunction<? extends R> transform)
      • filter

        public static <T> java.util.List<T> filter​(java.lang.Iterable<T> list,
                                                   java.util.function.Predicate<? super T> predicate)
      • unique

        public static <T,​R> java.util.Set<R> unique​(java.util.Collection<T> collection,
                                                          java.util.function.Function<? super T,​? extends R> transform)
      • unique

        public static <T,​R> java.util.Set<R> unique​(java.util.stream.Stream<T> stream,
                                                          java.util.function.Function<? super T,​? extends R> transform)
      • uniqueIndex

        public static <K,​V> java.util.Map<K,​V> uniqueIndex​(java.util.Collection<V> collection,
                                                                       java.util.function.Function<? super V,​? extends K> keyFunction)
      • uniqueIndex

        public static <K,​V> java.util.Map<K,​V> uniqueIndex​(java.util.stream.Stream<V> stream,
                                                                       java.util.function.Function<? super V,​? extends K> keyFunction)
      • sum

        public static java.math.BigDecimal sum​(java.util.stream.Stream<java.math.BigDecimal> stream)
      • reverseRange

        public static java.util.stream.IntStream reverseRange​(int endExclusive,
                                                              int start)